How to Find Your Apple Watch’s Battery Cycle Count

On Apple’s Battery Service page, they say “Your [Apple Watch] battery is designed to retain up to 80% of its original capacity at 1000 complete charge cycles.”  What they don’t tell you is how to tell how many charge cycles your watch has been through.  Here’s how:

  1. On your iPhone, open the Watch app, and go to General > Diagnostic Logs
  2. Scroll down to the latest log-aggregated-20nn-nn-nn-nnnnn.. and open it.  Don’t see any logs?  Then you need to turn Analytics on.  And wait a day.
  3. AirDrop the log to your Mac and rename it to a text file.  Open it in TextEdit and Cmd-F for: cycle_count  (Or you can just scroll about 3/4 way down the phone screen.)


My Series 1 is at 769 cycles.  It’s mostly fine.  Occasionally a third-party audio streaming app causes excessive battery drain and I have to charge it twice in one day.  But that’s the exception.  With a 1000 cycle lifetime, and my use case, that’s almost ~3.8 years of daily charging.  Pretty good lifespan for a tiny 205mAh smart watch battery.

Hopefully in a future revision of watchOS, Apple will create a battery health screen.  Then this digging (or unnecessary trips to the Apple Store for diagnostics) won’t be necessary.

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